Yeah it's essentially a trigger. I have a few purposes. One is for my dumb washing machine plugged into an energy monitoring smart plug. After it registers the washing is done, I'll get alerts through the house in intervals until I get up and scan the NFC tag on the washing machine (I forget to hang out washing.

As I'm in a rental and I can't have smart switches so I have smart globes and put tags on the switches to toggle the lights.

One by my bedside table to turn off all the lights and smart plugs.

One on my front door to set my away from home scene.

I also have a signed band poster hung on the wall with one, which opens the album in Spotify.

Good fun.